基于定转子开窗的混合励磁双定子BSRM振动抑制

无轴承开关磁阻电机（BSRM）由于容错性高、损耗小、效率高等优点在工业领域已得到广泛应用，但电机运行时振动会限制其在某些领域的应用。以混合励磁双定子BSRM为研究对象引入一种在定转子齿部开窗的方法，通过改变外定子或转子铁心磁阻大小，可以减小气隙中的磁密大小，达到减小电磁振动的目的。采用电磁有限元法与正交试验法优化窗口的位置和尺寸，验证转子开窗对外定子径向力和转矩的影响，最后通过模态叠加法验证转子开窗对振动响应的影响。结果表明，该方法对混合励磁双定子BSRM电磁振动有较好的抑制效果但对电机转矩有一定影响。

Vibration Suppression of Hybrid Excitation Double-Stator BSRM Based on Stator-Rotor Fenestrating

Bearingless switched reluctance motor (BSRM) has been widely used in industry due to its high fault tolerance, low loss and high efficiency, but the vibration during motor operation can affect its application in certain fields. Taking BSRM as the research object, a method of opening the window at the stator-rotor teeth is introduced. By changing the reluctance of stator or rotor core, the magnetic flux density in the air gap can be reduced, to achieve the purpose of reducing electromagnetic vibration. The position and size of windows are optimized by electromagnetic finite element method and orthogonal experimental method. Verify the impact of rotor window opening on radial force and torque of the external stator. Finally, the influence of rotor window opening on vibration response is verified by modal superposition method. The results show that the proposed method has a good suppression effect on the electromagnetic vibration of hybrid excitation double-stator BSRM , but has a certain influence on the torque of the motor.